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Tunnel valleys frequently include relatively straight individual segments parallel to and independent of one another. Tunnel valley courses may be periodically interrupted; the interruption may include a stretch of elevated esker, indicating the channel ran through ice for a distance. The below-grade sections typically run 5–30 km (3.1–18.6 ...
A partly submerged glacier cave on Perito Moreno Glacier.The ice facade is approximately 60 m high Ice formations in the Titlis glacier cave. A glacier cave is a cave formed within the ice of a glacier.
Crepuscular, a classification of animals that are active primarily during twilight, making them similar to nocturnal animals.; Diurnality, plant or animal behavior characterized by activity during the day and sleeping at night.
The Seven Rila Lakes in Rila mountain, Bulgaria, are of glacial origin. The Great Lakes as seen from space. The Great Lakes are the largest glacial lakes in the world. The prehistoric glacial Lake Agassiz once held more water than contained by all lakes in the world today.
Diagram showing upward sloped glacis. A glacis (/ ˈ ɡ l eɪ. s ɪ s /, French:) in military engineering is an artificial slope as part of a medieval castle or in early modern fortresses.
The mole runs are in reality "worm traps", the mole sensing when a worm falls into the tunnel and quickly running along to kill and eat it. [10] Because their saliva contains a toxin that can paralyze earthworms, moles are able to store their still-living prey for later consumption. They construct special underground "larders" for just this ...
Prairie dog tunnel systems channel rainwater into the water table, which prevents runoff and erosion, and can also change the composition of the soil in a region by reversing soil compaction that can result from cattle grazing. Prairie dog burrows are 5–10 m (16–33 ft) long and 2–3 m (6.6–9.8 ft) below the ground. [20]
The greater bilby (Macrotis lagotis), or simply the bilby, is a long-eared, rabbit-like mammal native to Australia.It lives in burrows and is active at night, feeding on insects, fruit, or fungi.